From b3e1331eb925a45df1cc5d02a725e5ea70da0e2e Mon Sep 17 00:00:00 2001 From: Kui-Feng Lee Date: Mon, 26 Sep 2022 11:49:56 -0700 Subject: selftests/bpf: Test parameterized task BPF iterators. Test iterators of vma, files and tasks. Ensure the API works appropriately to visit all tasks, tasks in a process, or a particular task. Signed-off-by: Kui-Feng Lee Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20220926184957.208194-5-kuifeng@fb.com --- tools/testing/selftests/bpf/progs/bpf_iter_task.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'tools/testing/selftests/bpf/progs/bpf_iter_task.c') diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task.c b/tools/testing/selftests/bpf/progs/bpf_iter_task.c index d22741272692..96131b9a1caa 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task.c @@ -6,6 +6,10 @@ char _license[] SEC("license") = "GPL"; +uint32_t tid = 0; +int num_unknown_tid = 0; +int num_known_tid = 0; + SEC("iter/task") int dump_task(struct bpf_iter__task *ctx) { @@ -18,6 +22,11 @@ int dump_task(struct bpf_iter__task *ctx) return 0; } + if (task->pid != tid) + num_unknown_tid++; + else + num_known_tid++; + if (ctx->meta->seq_num == 0) BPF_SEQ_PRINTF(seq, " tgid gid\n"); -- cgit v1.2.3